From e588c4925a9d95130c1765b680241eb49ed1f94d Mon Sep 17 00:00:00 2001
From: bolero-MURAKAMI <bolero.murakami@gmail.com>
Date: Sun, 25 Nov 2012 14:38:49 +0900
Subject: [PATCH] fix alternate_iterator

---
 sprout/iterator/alternate_iterator.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sprout/iterator/alternate_iterator.hpp b/sprout/iterator/alternate_iterator.hpp
index bda8c619..25d5fd5a 100644
--- a/sprout/iterator/alternate_iterator.hpp
+++ b/sprout/iterator/alternate_iterator.hpp
@@ -41,7 +41,7 @@ namespace sprout {
 		bool in_left;
 	private:
 		SPROUT_CONSTEXPR alternate_iterator advance_impl_1(difference_type n) const {
-			return alternate_iterator(sprout::next(current1, n / 2), sprout::next(current2, n / 2), n % 2);
+			return alternate_iterator(sprout::next(current1, n / 2), sprout::next(current2, n / 2), !(n % 2));
 		}
 		SPROUT_CONSTEXPR alternate_iterator advance_impl(difference_type n) const {
 			return advance_impl_1(n + (!is_in_left() ? 1 : 0));